From: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
To: Christian Borntraeger <borntraeger@linux.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Janis Schoetterl-Glausch <scgl@linux.ibm.com>,
David Hildenbrand <david@redhat.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
kvm@vger.kernel.org, Shuah Khan <shuah@kernel.org>,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: [PATCH 0/2] Dirtying, failing memop: don't indicate suppression
Date: Fri, 1 Apr 2022 19:02:45 +0200 [thread overview]
Message-ID: <20220401170247.1287354-1-scgl@linux.ibm.com> (raw)
If a memop fails due to key checked protection, after already having
written to the guest, don't indicate suppression to the guest, as that
would imply that memory wasn't modified.
This could be considered a fix to the code introducing storage key
support, however this is a bug in KVM only if we emulate an
instructions writing to an operand spanning multiple pages, which I
don't believe we do.
Janis Schoetterl-Glausch (2):
KVM: s390: Don't indicate suppression on dirtying, failing memop
KVM: s390: selftest: Test suppression indication on key prot exception
arch/s390/kvm/gaccess.c | 47 ++++++++++++++---------
tools/testing/selftests/kvm/s390x/memop.c | 43 ++++++++++++++++++++-
2 files changed, 70 insertions(+), 20 deletions(-)
base-commit: 1ebdbeb03efe89f01f15df038a589077df3d21f5
--
2.32.0
next reply other threads:[~2022-04-01 17:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-01 17:02 Janis Schoetterl-Glausch [this message]
2022-04-01 17:02 ` [PATCH 1/2] KVM: s390: Don't indicate suppression on dirtying, failing memop Janis Schoetterl-Glausch
2022-04-01 17:13 ` Christian Borntraeger
2022-04-01 17:40 ` Janis Schoetterl-Glausch
2022-04-01 17:02 ` [PATCH 2/2] KVM: s390: selftest: Test suppression indication on key prot exception Janis Schoetterl-Glausch
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